单光子发射型计算机断层扫描在下消化道出血诊断中的应用  

Dignosis of SPECT in lower digestive tract hemorrhage

作　　者：胡晖[1] 邓豪余[1] 李新辉[1] 梁昌华[1] 

机构地区：[1]中南大学湘雅医院核医学科,湖南长沙410008

出　　处：《中国普通外科杂志》2002年第12期728-730,共3页China Journal of General Surgery

摘　　要：目的　探讨单光子发射型计算机断层扫描 (SPECT)显像在下消化道出血中的诊断价值。方法　回顾性分析 2 4例下消化道出血患者SPECT显像资料。行异位胃黏膜显像者 1 6例 ,行99m　Tc -植酸钠 (PHA)显像者 4例 ,行99m　Tc-红细胞 (RBC)显像者 4例 ,所有患者均接受手术并进行病理检查。结果　异位胃黏膜显像的阳性率为 1 0 0 % (1 6/1 6) ,特异性为 93 .7% (1 5/1 6) ;99m　Tc PHA显像和99m　Tc RBC显像的阳性率分别为 75 .0 % (3/4)和 75 .0 % (3/4) ,但诊断缺乏特异性。结论　SPECT在美克尔憩室的诊断中有很高的灵敏度和特异性 ;对不明原因下消化道出血进行99m　Tc PHA显像或99m　TcObjective To determine the diagnostic value of SPECT in lower digestive tract hemorrhage (LDTH). Methods Of the 24 LDTH cases,16 were tested by gastric mucosa imaging ,4 by 99m Tc PHA imaging,and the other 4 by 99m Tc RBC imaging.All the patients' diagnosis were confirmed by surgery and pathology. Results The sensitivity and the specificity of the gastric mucosa imaging were 100%(16/16) and 93.7%(15/16),respectively. The sensitivity of the 99m Tc PHA imaging and the 99m Tc RBC imaging was 75.0%(3/4) and 75.0 %(3/4), respectively, but had no specificity. Conclusions SPECT has very high sensitivity and specificity in the diagnosis of Meckel's diverticulum. 99m Tc PHA imaging and 99m Tc RBC imaging may help to determine the position of bleeding in unkown causes of LDTH.

关 键 词：下消化道出血 诊断 CT 

分 类 号：R573.2[医药卫生—消化系统] R816.[医药卫生—内科学]